Maisie Williams, who plays the diminutive but fiery Arya Stark on Game of Thrones, will guest star on the upcoming season of Doctor Who. The award-winning actress went straight from a U.S. tour to the TARDIS to film her guest role.

“I’m so excited to be working on Doctor Who as it’s such a big and important part of British Culture,” Williams said. “I can’t wait to meet the cast and crew and start filming, especially as we’ll be shooting not too far from my home town.”

“We’re thrilled to have Maisie Williams joining us on Doctor Who,” Producer Steven Moffat added. “It’s not possible to say too much about who or what she’s playing, but she is going to challenge the Doctor in very unexpected ways. This time he might just be out of his depth, and we know Maisie is going to give him exactly the right sort of hell.”

Hmm…I’m not really sure the Doctor is up to dealing with a teenager…especially one who carries Needle…